A second variety is kosher, supervised by the KF Federation of Synagogues in London, UK. The second variety is no longer kosher certified by the KF Kosher Federation, though there might be products on the market, with Cholov Yisroel.[citation needed] The product is now yearly certified kosher by the STAR-D (non-Cholov Yisroel).

The Kopiko UK website advises "4-5 sweets contain the caffeine equivalent of a cup of espresso" for the original coffee flavor, while the cappuccino flavor sweets contain "around half the caffeine" of the original coffee flavor.[5]

The Caffeine Informer website estimates the caffeine content of the original coffee flavor to be "about 20-25 mg per piece since usually a cup of coffee is referring to 100 mg of caffeine."[6]